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Unconditionally Secure Quantum Bit Commitment

Horace P. Yuen

quant-pharXiv:quant-ph/0505132

Abstract

The ``impossibility proof'' on unconditionally secure quantum bit commitment is examined. It is shown that the possibility of juxtaposing quantum and classical randomness has not been properly taken into account. A specific protocol that beats entanglement cheating with entanglement is proven to be unconditionally secure.

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